pope francis wore the same simple iron cross he wore as a cardinal. as he continues to set a new tone at the vatican. elizabeth corridan has the story. >> reporter: pope francis rolled into st. peter's square tuesday morning where a crowd of thousands gathered under sunny skies to witness his inaugural mass. he did not ride in the traditional pope mobile, opting instead for an open- air vehicle that allowed him direct contact with the faithful. he kissed babies and even got out of his s-u-v to bless a disabled man. jhorsn) >> reporter: following ceremonies inside st. peter's basilica, pope francis processed outdoors where he was inaugurated bishop of rome. the newly-elected pontiff accepted a lamb's wool shawl.a symbol of his role as "the good shepherd" and the fisherman's ring, representing his duty to spread the gospel. pope francis delivered his first homily in italian, asking followers to assume the role of protectors. >> we are all protectors of protectors of one another, of the environment. let us not allow signs of destruction and death accompa